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Using Modems 10-7
Configuring Ports for Modem Use
To configure all ports for the same modem type, use all instead of the port number in
the previous example. After the modem is attached to the port, configure the other
modem settings described in “Configuring Ports for Modem Use” on page 10-7.
To configure the modem not to answer when users dial in, set S0=0 in the initialization
string.
Configuring Ports for Modem Use
The modem settings described in this section are configured for each port and should
match the configuration on the attached modem.
Setting the Port Speed
The speed of a port is defined as the DTE baud rate. The PortMaster allows you to
specify three different baud rates for each port and one baud rate for host device ports.
Port speeds are sequentially matched from the first baud rate through the third baud
rate.
For example, when a connection with this port is established, the PortMaster uses the
first baud rate value to try to synchronize the connection speed. If no synchronization is
possible, the PortMaster tries to synchronize speeds using the second baud rate value. If
this fails, the third baud rate value is used. Each speed can be set between 300bps to
115200bps. The default speed is 9600bps.
Modern modems and terminals should always be set to run at a fixed rate. To define a
fixed rate, lock the DTE rate by setting all three speeds to the same value.
To set the port speed, use the following command—entered on one line:
Command> set S0|all speed [1|2|3] Speed
You can substitute any of the following for
Speed
:
You can set the speed for all the asynchronous ports simultaneously by using the
set all speed command.
300 1200 4800 19200 57600 115200
600 2400 9600 38400 76800